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中国农学通报 ›› 2022, Vol. 38 ›› Issue (33): 139-144.doi: 10.11924/j.issn.1000-6850.casb2021-1185

所属专题: 生物技术

• 食品·营养·检测·安全 • 上一篇    下一篇

唐菖蒲伯克霍尔德菌产毒差异菌株菌体脂肪酸分析

黄秀丽(), 罗月珍, 黄永德, 王晓琴, 朱文娟, 张丰芸, 赵智锋, 陈嘉聪   

  1. 惠州市食品药品检验所,广东惠州 516003
  • 收稿日期:2021-12-13 修回日期:2022-03-28 出版日期:2022-11-25 发布日期:2022-11-22
  • 作者简介:黄秀丽,女,1978年出生,山东济宁人,博士研究生,主要从事食品相关成分检测方法的研究与开发。通信地址:516003 广东省惠州市惠城区江北文成路13号 惠州市食品药品检验所,Tel:0752-2840402,E-mail:49846120@qq.com
  • 基金资助:
    广东省惠州市科技局项目“椰毒假单胞菌酵米面亚种产毒机制及关键控制技术研究”(2021WC010301);“椰毒假单胞菌酵米面亚种毒素一测多评及关键控制技术研究”(2020SC0204013)

Analysis of Fatty Acids in Different Strains of Burkholderia gladioli

HUANG Xiuli(), LUO Yuezhen, HUANG Yongde, WAGN Xiaoqin, ZHU Wenjuan, ZHANG Fengyun, ZHAO Zhifeng, CHEN Jiacong   

  1. Huizhou Institute for Food and Drug Control, Huizhou, Guangdong 516003
  • Received:2021-12-13 Revised:2022-03-28 Online:2022-11-25 Published:2022-11-22

摘要:

为了探讨脂肪酸与椰毒假单胞菌米酵菌酸毒素产生之间的相关性,采用气相色谱和面积归一法分别对产毒差异菌株的菌体脂肪酸进行分离和定量分析。结果显示,9株菌株共分离到11种组分,其中十六碳酸(C16:0)、顺-10-十七碳一烯酸(C17:1)以及顺,顺-9,12-十八碳二烯酸(C18:2n6c)含量较高,平均含量依次为43.85%、25.84%和14.75%。培养基及培养温度是影响脂肪酸组成的主要因素,相同培养条件下,9株菌株菌体脂肪酸组成相似度达90%以上。毒性试验后,不产毒菌株10574与产毒菌株菌体脂肪酸均发生相似变化,即顺-9-十八碳一烯酸(C18:1n9c)含量降低,而顺,顺-9,12-十八碳二烯酸(C18:2n6c)含量升高。生长条件是影响菌体脂肪酸组成的主要因素,脂肪酸与椰毒假单胞菌米酵菌酸产生的相关性不大。

关键词: 唐菖蒲伯克霍尔德氏菌, 椰毒假单胞菌酵米面亚种, 米酵菌酸, 毒黄素, 脂肪酸

Abstract:

In order to explore the correlation between fatty acids and the production of bongkrekic acid from Pseudomonas cocovenenans subsp. farinofermentans, the fatty acids of different toxin-producing strains were separated by gas chromatography, and the chromatographic peaks were quantitatively analyzed by area normalization method. The results showed that a total of 11 components were isolated from 9 strains, including hexadecanoic acid (C16:0), cis-10-heptadecaenoic acid (C17:1) and cis,cis-9,12-octadecadienoic acid (C18:2n6c), with an average content of 43.85%, 25.84% and 14.75%, respectively. Culture medium and culture temperature were the main factors affecting fatty acid composition. Under the same culture conditions, the similarity of fatty acid composition of the 9 strains was more than 90%. After the toxicity test, the fatty acids of non-virulent strain 10574 and toxin-producing strain showed similar changes, the content of cis-9-octadecenoic acid (C18:1n9c) decreased, while the content of cis,cis-9,12-octadecadienoic acid (C18:2n6c) increased. The culture condition is the main factor affecting the fatty acid composition of Pseudomonas cocovenenans subsp. farinofermentans, and there is little correlation between fatty acids and the production of bongkrekic acid.

Key words: Burkholderia gladioli, Pseudomonas cocovenenans subsp. farinofermentans, bongkrekic acid, toxoflavin, fatty acid

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